New! View global litigation for patent families

US4154469A - Energy absorbing device - Google Patents

Energy absorbing device Download PDF

Info

Publication number
US4154469A
US4154469A US05833959 US83395977A US4154469A US 4154469 A US4154469 A US 4154469A US 05833959 US05833959 US 05833959 US 83395977 A US83395977 A US 83395977A US 4154469 A US4154469 A US 4154469A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
absorbing
device
members
energy
impact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05833959
Inventor
Marcel Goupy
Pierre Roubinet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Automobiles Peugeot SA
Regie Nationale des Usines Renault
Original Assignee
Automobiles Peugeot SA
Regie Nationale des Usines Renault
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R19/00Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
    • B60R19/02Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
    • B60R19/18Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
    • B60R2019/186Additional energy absorbing means supported on bumber beams, e.g. cellular structures or material
    • B60R2019/1866Cellular structures

Abstract

The energy absorbing device for use as a composite bumper on a vehicle comprises a deformable unit providing a constant energy absorption, the unit being disposed in contact with a resisting structure and a flexible shield, and consisting of a number of energy absorbing members, each energy absorbing member being formed by the juxtaposition of a plurality of elongated hollow members having different lengths. Provision is made within the energy absorbing device of sections having an increasing impact resistance as the impact stress causes the energy absorbing device to be crushed, the stiffness of the energy absorbing device being thus enhanced as a function of the driving in thereof.

Description

The invention relates to an energy absorbing device for use as a composite bumper on an automotive vehicle.

In French Pat. No. 74/07434, there was already disclosed a composite bumper comprising absorbing members formed by the juxtaposition of a plurality of elongated hollow members molded in synthetic material. According to a main feature of said bumper, there was provided a constant stress absorption during the impact deformation period or driving in, due to the modification of the profile of said bumper bearing surface in contact with the bumper beam or vehicle chassis.

It has now been found that such a modification is further advantageous when one wishes to increase the temperature gap in which said bumpers are efficient, particularly when they have been molded in cheap synthetic materials which are sensitive to temperature variations, such as lower polyethylen. In fact the mechanical characteristics of absorbing devices obtained from synthetic materials of this type are damaged when they are subjected to temperature in the range of -20° or +40° C. for a long period of time.

It is an object of the invention to eliminate the disadvantages stated hereinabove. It is another object of the invention to provide an energy absorbing device for use as a composite bumper on a vehicle comprising a deformable unit providing a constant energy absorption, said unit being disposed in contact with a resisting structure and a flexible shield, and consisting of a number of energy absorbing members, each energy absorbing member being formed by the juxtaposition of a plurality of elongated hollow members having different lengths, said energy absorbing device being further characterized in that provision is made within said device of sections having an increasing impact resistance as the impact stress causes said absorbing device to be crushed, the stiffness of said device being thus enhanced as a function of the driving in thereof.

This improved energy absorbing device is further characterized by the following features:

Said sections wherein the resistance is increased during the impact period are formed by providing within said hollow elongated member a structure consisting of a plurality of longitudinal partitions crossing at right angle to each other, each having a length different from each other but less than the length of the relative hollow elongated member.

The vertical partition forming the rear end of the absorbing member is more or less located far from the front end thereof, as to provide a certain stiffness staggering in said member.

The thickness of the walls of said hollow elongated member is increasingly varying towards the rear end of said absorbing member, as to obtain a certain stiffness staggering in said member.

The absorbing member comprises a first front section and a second rear section, separated from each other by means of a vertical partition, each section being molded in a synthetic material whose tension modulus is different from that of the material constituting the other section.

The absorbing unit is located along the whole length of the composite bumper and is formed by the juxtaposition of elongated hollow members having different cross-sections, the number of separating partitions being greater at the level of the frame side members of the vehicle than that at any point adjacent to the bumper, whereas the number of partitions is the lowest at the level of the middle portion of the vehicle transverse beam secured to the front portion of said frame side-members.

Some embodiments of the present invention will now be described by way of example only, and not in any sense by way of limitation, reference being made to the accompanying drawings, in which:

FIG. 1 is a cross-sectional view of an absorbing device of the known art;

FIG. 2 shows graphs corresponding to the driving in stresses to which was subjected during a crushing impact the absorbing device of FIG. 1;

FIG. 3 is a cross-sectional view of a first embodiment of the absorbing device according to the invention;

FIG. 4 shows graphs corresponding to the driving in stresses to which was subjected during a crushing impact the absorbing device of FIG. 3;

FIG. 5 is a perspective fragmentary view partially broken away of the absorbing device shown in FIG. 3;

FIGS. 6, 7, 8 show three different forms of embodiments of the absorbing device according to the invention, as cross-sectional views respectively;

FIG. 9 is a cross-sectional view taken along an axially vertical plan of yet another embodiment of the invention;

FIG. 10 is a cross-sectional view taken along an horizontally transverse plan in the device shown in FIG. 9; and,

FIG. 11 is a graph showing the dispatching of the stresses when the absorbing device of FIG. 9 is impacted.

As shown in FIGS. 1 and 2, the absorbing device of the prior art is formed by the juxtaposition of elongated hollow members 1 having the same longitudinal length, said absorbing device having a front face evenly bearing on the bumper 2.

Upon impact of the vehicle, the kinetic energy might be eliminated by the mere deformation of the members constituting the absorbing device. This aim can be attained as far as the buckling stress imparted to said members is not greater than the maximum stress to which the structure on which bear said members may be subjected without breaking.

However, when the absorbing member shown in FIG. 1 is moulded in a material having a tension modulus which considerably varies with respect to the ambient temperature, one obtains for different temperature ranges the graphs shown in FIG. 2 wherein the stresses are along the y-axis and the driving in along the x-axis. The temperature conditions are as follows:

Curve a--impact at low temperature (-20° C.)

Curve b--impact at ambient temperature (+20° C.)

Curve c--impact at high temperature (+40° C.).

It has to be noted that for a certain level of performance in case of impacts at ambient temperature, one should be satisfied with said known absorbing device which, when subjected to impacts at non-ambient temperatures which substantially could occur along long periods of time, e.g. one year, shows a lack of efficiency. In fact the maximal stress Em, to which said known structure may be subjected without breaking, is exceeded as soon as the bumper is subjected to an impact at low temperature, whereas at high temperature said maximal stress is exceeded at the end of the relative impact. The driving in at low temperature is slight, whereas at high temperature, it exceeds the buckling characteristics of the walls and partitions forming the absorbing units.

The absorbing device shown in FIGS. 3 and 5 does not have said drawback. Said absorbing device consists of a molded box-shaped structure formed by the juxtaposition of hollow elongated members 3 provided with connecting partitions 4, 5 parallel to each other, the partitions having axial lengths different from each other, while in any case, said length is inferior to that of the relative absorbing unit 6. A vertical wall 9 forms the rear end of said absorbing unit.

Thus it has to be noted that the front face of said absorbing unit, which is abutting on the bumper, is only provided with a certain portion of the impact resistance capability that could be provided by the absorbing unit at the level of partitions 4 and 5, due to the fact that the number of partitions subjected to the impact stress increases as a function of the driving in.

As a result of said stiffness staggering and of the subsequent increase of the buckling power of said absorbing device, the maximum stress metered when the impacts occur within a large temperature range, never exceeds the maximal stress to which the vehicle structure may be subjected without breaking.

The graphs corresponding to the absorbing device of the invention are shown in FIG. 4. Curve d corresponds to an impact at low temperature (-20° C.). Curve e corresponds to an impact at ambient temperature (+20° C.). Curve f corresponds to an impact at high temperature (+40° C.).

FIG. 6 shows an alternative embodiment of the absorbing device according to the invention, in which the juxtaposition of hollow elongated members 7-8 of different axial length are combined with a staggering of vertical partition 9, which was the rear end in the previous embodiment, toward a location 10 at a certain distance from the front face of said absorbing device.

According to said modified embodiment, two series of absorbing units having different stiffnesses have been stacked, so as to form parameters on which one can act, since it has been noted in fact that the buckling stress increases as partition 10 is located nearer from the front face of the absorbing device.

FIG. 7 shows another embodiment of the invention, in which, as to continuously vary the stiffness of the absorbing unit as a function of the driving in strength thereof, the thickness of partitions 11 limiting the hollow members is continuously varied, thus further improving the relief as well as the demoulding thereof.

FIG. 8 shows yet another form of embodiment according to the invention. In said embodiment, as to obtain the stiffness staggering of the absorbing device, the latter is moulded in two distinct portions 12 and 13 in synthetic materials having tension moduli different from each other. Thus use can be made of a heavy-duty material for the front member 12 which is more subjected to repeated slight impacts, whereas the bottom member 13 may be formed in a cheaper material.

It has been noted that both portions 12-13 are each provided at the connection thereof with a vertical partition 21-22 respectively with complementary securing means, for instance clamping means.

It should also be noted that the rear face of portion 13 has an uneven surface in contact with the vehicle beam, taking on account the contour of the front face of the absorbing device.

In FIGS. 9 and 10, the absorbing member 14 is located across the whole transverse length of the bumper, between a deformable front member 15 and a rigid transverse beam 16. It is advantageous in this case to vary the space limited by partitions 17 of the absorbing device as to dispatch the stresses to which is subjected the vehicle chassis with respect to the maximal stress permissible by the different constituting parts thereof.

Graph in FIG. 11 illustrates the properties of the embodiment shown in FIG. 10, wherein partitions 17 are more confined in close relationship to the side-frame beams 18 than in the middle area of transverse beam 16 capable of buckling; similarly, the stress curve shows two maxima 20 at the level of said side-frame beams and one minimum 21 at the level of said transverse beam.

Claims (2)

What is claimed is:
1. In an energy absorbing device for use as a composite bumper on a vehicle comprising a deformable unit providing a constant energy absorption, the unit being disposed in contact with a resisting structure and a flexible shield and comprising a number of energy absorbing members, each energy absorbing member being formed by the juxtaposition of a plurality of elongated hollow members having different lengths, the improvement comprising forming, within said device, sections having an increasing impact resistance as impact stress causes said absorbing device to be crushed, said sections being formed by providing within said hollow elongated members structures comprising a plurality of longitudinal partitions crossing at right angles to each other and having different lengths, the lengths of partitions being less than the lengths of respective hollow elongated members, the stiffness of said device being thus enhanced as a function of the driving in thereof.
2. In an energy absorbing device for use as a composite bumper on a vehicle having frame side members with front portions interconnected by a vehicle transverse beam comprising a deformable absorbing unit providing a constant energy absorption, the absorbing unit being disposed in contact with a resisting structure and a flexible shield and comprising a number of energy absorbing members, each energy absorbing member being formed by the juxtaposition of a plurality of elongated hollow members having different lengths, the improvement wherein said absorbing unit is located along the whole length of the composite bumper and is formed by the juxtaposition of elongated hollow members having different cross-sections, and wherein end portions of the composite bumper are positioned adjacent front portions of the frame side members, the number of hollow members being greatest in the end portions of the composite bumper and being lowest in the middle portion of the composite bumper, said hollow members forming within said device sections having an increasing impact resistance as impact stress causes said absorbing device to be crushed, the stiffness of said device being thus enhanced as a function of the driving in thereof.
US05833959 1976-09-21 1977-09-16 Energy absorbing device Expired - Lifetime US4154469A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7628255A FR2364788B2 (en) 1976-09-21 1976-09-21
FR7628255 1976-09-21

Publications (1)

Publication Number Publication Date
US4154469A true US4154469A (en) 1979-05-15

Family

ID=9177868

Family Applications (1)

Application Number Title Priority Date Filing Date
US05833959 Expired - Lifetime US4154469A (en) 1976-09-21 1977-09-16 Energy absorbing device

Country Status (8)

Country Link
US (1) US4154469A (en)
JP (1) JPS5345637U (en)
BE (1) BE857209R (en)
CA (1) CA1070355A (en)
DE (1) DE2741969A1 (en)
ES (1) ES461056A2 (en)
FR (1) FR2364788B2 (en)
GB (1) GB1587559A (en)

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278282A (en) * 1979-01-26 1981-07-14 Regie Nationale Des Usines Renault Elastic guard braces for attaching bumpers to automobiles
US4352484A (en) * 1980-09-05 1982-10-05 Energy Absorption Systems, Inc. Shear action and compression energy absorber
US4569865A (en) * 1984-03-23 1986-02-11 Susan Shoe Industries Limited Bumper fascia and process to bond ionomers to metal
US4635981A (en) * 1984-10-29 1987-01-13 Energy Absorption Systems, Inc. Impact attenuating body
US4711481A (en) * 1985-10-25 1987-12-08 Energy Absorption Systems, Inc. Vehicle impact attenuating device
US4742899A (en) * 1985-05-13 1988-05-10 Ford Motor Company Fiber reinforced tubular component
US5620276A (en) * 1995-09-29 1997-04-15 Plascore, Inc. Deformable impact test barrier
US6003930A (en) * 1997-03-11 1999-12-21 Alusuisse Technology & Management Ltd. Vehicle with bumper and deforming element
US6199942B1 (en) * 1998-02-04 2001-03-13 Oakwood Energy Management, Inc. Modular energy absorbing assembly
US6270131B1 (en) * 1999-03-05 2001-08-07 Compagnie Plastic Omnium Partitioned impact absorber made of two interfitting blocks, and a bumper beam including such an impact absorber
US20020043747A1 (en) * 2000-10-18 2002-04-18 Mario Vismara Efficiency impact absorption device
EP1219499A1 (en) * 2000-12-25 2002-07-03 Toyota Jidosha Kabushiki Kaisha Coupling structure of bumper reinforce and shock absorbing member
US6511109B1 (en) * 2000-03-10 2003-01-28 Plastech Engineered Products, Inc. Bumper system for an automotive vehicle
EP1253058A3 (en) * 2001-04-25 2003-10-15 Hitachi, Ltd. Railway car
US20050057053A1 (en) * 2003-07-03 2005-03-17 Darin Evans Bumper system incorporating thermoformed energy absorber
US20050097004A1 (en) * 2003-10-29 2005-05-05 Eduardo Masse Blume Method of advertising and related products
US6896317B2 (en) 2002-01-16 2005-05-24 Alcan Technology & Management Ltd. Energy-absorbing deformation element for vehicles
US20060001278A1 (en) * 2004-07-01 2006-01-05 Netshape International Llc Bumper impact-testing device
US20060131901A1 (en) * 2003-05-30 2006-06-22 Volkswagen Ag Fender configuration for a vehicle, especially for a motor vehicle
WO2006132396A1 (en) * 2005-06-07 2006-12-14 Toyota Jidosha Kabushiki Kaisha Vehicle with energy-absorbing member in the vehicle end portion structure
US20080185851A1 (en) * 2007-02-02 2008-08-07 Netshape Energy Management Llc Energy absorber with crush boxes and back straps
KR100899380B1 (en) 2007-03-30 2009-05-26 가부시키가이샤 히타치세이사쿠쇼 Transporter for land vehicles
US20090200810A1 (en) * 2005-04-29 2009-08-13 Compagnie Plastic Omnium Assembly Consisting of a Bumper Skin and of a Shock Absorber
US20110101714A1 (en) * 2003-06-03 2011-05-05 Ann Bator Mary Bumper energy absorber and method of fabricaitng and assembling the same
USD679058S1 (en) 2011-07-01 2013-03-26 Intellectual Property Holdings, Llc Helmet liner
USD683079S1 (en) 2011-10-10 2013-05-21 Intellectual Property Holdings, Llc Helmet liner
US20130292969A1 (en) * 2010-11-26 2013-11-07 Faurecia Kunststoffe Automobilsysteme Gmbh Front end module arrangement for the chassis of a motor vehicle
US8726424B2 (en) 2010-06-03 2014-05-20 Intellectual Property Holdings, Llc Energy management structure
USD733972S1 (en) 2013-09-12 2015-07-07 Intellectual Property Holdings, Llc Helmet
US9320311B2 (en) 2012-05-02 2016-04-26 Intellectual Property Holdings, Llc Helmet impact liner system
US9516910B2 (en) 2011-07-01 2016-12-13 Intellectual Property Holdings, Llc Helmet impact liner system
US9743701B2 (en) 2013-10-28 2017-08-29 Intellectual Property Holdings, Llc Helmet retention system
US9894953B2 (en) 2012-10-04 2018-02-20 Intellectual Property Holdings, Llc Helmet retention system

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1069138A (en) * 1976-10-04 1979-12-31 H. H. Robertson Company Kinetic energy absorbing pad
JPS5536142A (en) * 1978-09-05 1980-03-13 Nissan Motor Co Ltd Bumper structure
WO1980002069A1 (en) * 1979-03-19 1980-10-02 Aimpoint Ab Sighting instruments,in particular for fire arms
FR2481218B1 (en) * 1980-04-25 1982-05-07 Peugeot
DE3121628C2 (en) * 1981-05-30 1986-10-30 Daimler-Benz Ag, 7000 Stuttgart, De
JPS5811716U (en) * 1981-07-17 1983-01-25
US4666130A (en) * 1984-03-15 1987-05-19 Energy Absorption Systems, Inc. Expanded cell crash cushion
NL8600097A (en) * 1986-01-20 1987-08-17 Stamicarbon Bumper.
US5150935A (en) * 1990-11-06 1992-09-29 Concept Analysis Corp. Elastomeric energy absorbing mechanism for vehicle bumpers
FR2736315B1 (en) * 1995-07-07 1997-08-14 Renault Device for mounting a bumper on a vehicle structure
FR2750936B1 (en) * 1996-07-11 1998-09-25 Plastic Omnium Cie Bumper thermoplastic material provided with an integrated shield beam
DE10143890A1 (en) * 2001-09-07 2003-03-27 Opel Adam Ag Front structure of a motor vehicle
FR2887508B1 (en) * 2005-06-22 2007-09-28 Peugeot Citroen Automobiles Sa Beam energy absorption, especially for a motor vehicle, and motor vehicle equipped with such a beam
DE102006041095B4 (en) * 2006-09-01 2011-07-21 Audi Ag, 85057 Impact protection member for a vehicle body and with such impact protection member
JP5251289B2 (en) * 2007-08-10 2013-07-31 日産自動車株式会社 Energy absorbing member and the vehicle bumper
JP5240556B2 (en) * 2008-06-27 2013-07-17 東レ株式会社 Impact energy absorber

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3512822A (en) * 1968-11-20 1970-05-19 John W Rich Combination liquid and metal shock absorbing buffers
US3721433A (en) * 1969-11-21 1973-03-20 Collision Devices Inc Deformable shock-absorbing guard
US3744835A (en) * 1971-11-26 1973-07-10 A Carbone Shock absorbing honeycomb bumper
US4022505A (en) * 1975-11-28 1977-05-10 General Motors Corporation Energy absorbing cellular media for vehicles
US4029350A (en) * 1974-03-05 1977-06-14 Regie Nationale Des Usines Renault Energy absorbing device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS546201U (en) * 1977-06-16 1979-01-16

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3512822A (en) * 1968-11-20 1970-05-19 John W Rich Combination liquid and metal shock absorbing buffers
US3721433A (en) * 1969-11-21 1973-03-20 Collision Devices Inc Deformable shock-absorbing guard
US3744835A (en) * 1971-11-26 1973-07-10 A Carbone Shock absorbing honeycomb bumper
US4029350A (en) * 1974-03-05 1977-06-14 Regie Nationale Des Usines Renault Energy absorbing device
US4022505A (en) * 1975-11-28 1977-05-10 General Motors Corporation Energy absorbing cellular media for vehicles

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278282A (en) * 1979-01-26 1981-07-14 Regie Nationale Des Usines Renault Elastic guard braces for attaching bumpers to automobiles
US4352484A (en) * 1980-09-05 1982-10-05 Energy Absorption Systems, Inc. Shear action and compression energy absorber
US4569865A (en) * 1984-03-23 1986-02-11 Susan Shoe Industries Limited Bumper fascia and process to bond ionomers to metal
US4635981A (en) * 1984-10-29 1987-01-13 Energy Absorption Systems, Inc. Impact attenuating body
US4742899A (en) * 1985-05-13 1988-05-10 Ford Motor Company Fiber reinforced tubular component
US4711481A (en) * 1985-10-25 1987-12-08 Energy Absorption Systems, Inc. Vehicle impact attenuating device
US5620276A (en) * 1995-09-29 1997-04-15 Plascore, Inc. Deformable impact test barrier
US5779389A (en) * 1995-09-29 1998-07-14 Plascore, Inc. Deformable impact test barrier
US6003930A (en) * 1997-03-11 1999-12-21 Alusuisse Technology & Management Ltd. Vehicle with bumper and deforming element
US6199942B1 (en) * 1998-02-04 2001-03-13 Oakwood Energy Management, Inc. Modular energy absorbing assembly
US6270131B1 (en) * 1999-03-05 2001-08-07 Compagnie Plastic Omnium Partitioned impact absorber made of two interfitting blocks, and a bumper beam including such an impact absorber
US6511109B1 (en) * 2000-03-10 2003-01-28 Plastech Engineered Products, Inc. Bumper system for an automotive vehicle
US20020043747A1 (en) * 2000-10-18 2002-04-18 Mario Vismara Efficiency impact absorption device
EP1219499A1 (en) * 2000-12-25 2002-07-03 Toyota Jidosha Kabushiki Kaisha Coupling structure of bumper reinforce and shock absorbing member
US6502874B2 (en) * 2000-12-25 2003-01-07 Toyota Jidosha Kabushiki Kaisha Coupling structure of shock transmitting member and shock absorbing member, and bumper
US6871599B2 (en) 2001-04-25 2005-03-29 Hitachi, Ltd. Railway car
US20040139879A1 (en) * 2001-04-25 2004-07-22 Sumio Okuno Railway car
EP1253058A3 (en) * 2001-04-25 2003-10-15 Hitachi, Ltd. Railway car
US6896317B2 (en) 2002-01-16 2005-05-24 Alcan Technology & Management Ltd. Energy-absorbing deformation element for vehicles
US7159911B2 (en) 2003-05-30 2007-01-09 Volkswagen Ag Fender configuration for a vehicle, especially for a motor vehicle
US20060131901A1 (en) * 2003-05-30 2006-06-22 Volkswagen Ag Fender configuration for a vehicle, especially for a motor vehicle
US20110101714A1 (en) * 2003-06-03 2011-05-05 Ann Bator Mary Bumper energy absorber and method of fabricaitng and assembling the same
US7222897B2 (en) 2003-07-03 2007-05-29 Netshape Energy Management Llc Method of constructing bumper incorporating thermoformed energy absorber
US20050057053A1 (en) * 2003-07-03 2005-03-17 Darin Evans Bumper system incorporating thermoformed energy absorber
US20060284431A1 (en) * 2003-07-03 2006-12-21 Darin Evans Method of constructing bumper incorporating thermoformed energy absorber
US7131674B2 (en) 2003-07-03 2006-11-07 Netshape International, Llc Bumper system incorporating thermoformed energy absorber
US20050097004A1 (en) * 2003-10-29 2005-05-05 Eduardo Masse Blume Method of advertising and related products
US20060001278A1 (en) * 2004-07-01 2006-01-05 Netshape International Llc Bumper impact-testing device
US7228723B2 (en) 2004-07-01 2007-06-12 Netshape Energy Management Llc Bumper impact-testing device
US7661735B2 (en) * 2005-04-29 2010-02-16 Compagnie Plastic Omnium Assembly consisting of a bumper skin and of a shock absorber
US20090200810A1 (en) * 2005-04-29 2009-08-13 Compagnie Plastic Omnium Assembly Consisting of a Bumper Skin and of a Shock Absorber
US7896410B2 (en) 2005-06-07 2011-03-01 Toyota Jidosha Kabushiki Kaisha Vehicle with energy-absorbing member in the vehicle end portion structure
CN101193774B (en) 2005-06-07 2010-12-08 丰田自动车株式会社 Vehicle with energy-absorbing member in the vehicle end portion structure
WO2006132396A1 (en) * 2005-06-07 2006-12-14 Toyota Jidosha Kabushiki Kaisha Vehicle with energy-absorbing member in the vehicle end portion structure
US20090267367A1 (en) * 2005-06-07 2009-10-29 Masaaki Morikawa Vehicle with energy-absorbing member in the vehicle end portion structure
US7699367B2 (en) * 2007-02-02 2010-04-20 Netshape Energy Management, Llc Energy absorber with crush boxes and back straps
US20080185851A1 (en) * 2007-02-02 2008-08-07 Netshape Energy Management Llc Energy absorber with crush boxes and back straps
KR100899380B1 (en) 2007-03-30 2009-05-26 가부시키가이샤 히타치세이사쿠쇼 Transporter for land vehicles
US8726424B2 (en) 2010-06-03 2014-05-20 Intellectual Property Holdings, Llc Energy management structure
US20130292969A1 (en) * 2010-11-26 2013-11-07 Faurecia Kunststoffe Automobilsysteme Gmbh Front end module arrangement for the chassis of a motor vehicle
USD679058S1 (en) 2011-07-01 2013-03-26 Intellectual Property Holdings, Llc Helmet liner
US9516910B2 (en) 2011-07-01 2016-12-13 Intellectual Property Holdings, Llc Helmet impact liner system
USD683079S1 (en) 2011-10-10 2013-05-21 Intellectual Property Holdings, Llc Helmet liner
US9320311B2 (en) 2012-05-02 2016-04-26 Intellectual Property Holdings, Llc Helmet impact liner system
US9894953B2 (en) 2012-10-04 2018-02-20 Intellectual Property Holdings, Llc Helmet retention system
USD733972S1 (en) 2013-09-12 2015-07-07 Intellectual Property Holdings, Llc Helmet
US9743701B2 (en) 2013-10-28 2017-08-29 Intellectual Property Holdings, Llc Helmet retention system

Also Published As

Publication number Publication date Type
CA1070355A (en) 1980-01-22 grant
FR2364788B2 (en) 1981-04-30 grant
ES461056A2 (en) 1978-06-01 application
JPS5345637U (en) 1978-04-18 application
BE857209A4 (en) grant
CA1070355A1 (en) grant
BE857209R (en) 1977-11-14 grant
FR2364788A2 (en) 1978-04-14 application
DE2741969A1 (en) 1978-03-23 application
GB1587559A (en) 1981-04-08 application

Similar Documents

Publication Publication Date Title
US3439769A (en) Safety instrument panel
US4072334A (en) Energy absorbing bumper
US5700545A (en) Energy absorbing structure
US5992914A (en) Trim member for vehicle
US3829149A (en) Beam construction
US5404974A (en) Impact-absorbing transverse support arrangement
US6866313B2 (en) Bumper assembly including and energy absorber
US4998761A (en) Reinforced impact bar for a bumper assembly
US4252355A (en) Bumpers or shields for the protection of automobiles
US3989275A (en) Interior energy absorbing means for vehicles
US4782913A (en) Constructional element with acoustic properties
US3926463A (en) Shock absorbing buffer assembly
US6290272B1 (en) Energy absorber for bumpers of motor vehicles
US7163242B2 (en) Bumper system with energy absorber
US6315339B1 (en) Vehicular shock absorber
US3933387A (en) Thermoformed plastic energy absorber for vehicles
US7163243B2 (en) Bumper for pedestrian impact having thermoformed energy absorber
US6082792A (en) Vehicle bumper
US6170872B1 (en) Deformation element for a motor vehicle dashboard and the like
US7806448B2 (en) Vehicle bumper system with energy absorber
US6983964B2 (en) Vehicle bumper structure
US20050213478A1 (en) Energy management beam
US6179355B1 (en) Automotive vehicle bumper assembly
US5290078A (en) Integral fasteners for an energy absorber of a vehicular bumper assembly
US5711562A (en) Bumper assembly for vehicles